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Results are presented for the a.c. surface loss in pure lead and type I lead-indium alloys when the peak value of the alternating applied magnetic field is less than H c , i.e. the Meissner state. Measurements were performed by a wattmeter technique on short cylindrical samples and show that loss per cycle is reduced with improved surface profile and is independent of normal-state resistivity and magnetic field frequency.
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Seebold et al. (1969) studied this question.
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